Short medium logic riddles for teens

cleanlogicmath

How do you make the number 7 an even number without addition, subtraction, multiplication, or division?
Drop the "S".
72.70 %
70 votes
logicscary

The person who built it sold it. The person who bought it never used it. The person who used it never saw it. What is it?
It's a coffin.
72.68 %
2114 votes
logicmathcleanclever

What is the value of 1/2 of 2/3 of 3/4 of 4/5 of 5/6 of 6/7 of 7/8 of 8/9 of 9/10 of 1000?
100. Looks hard? Don't worry, just work it backwards and you'll find it very easy.
72.34 %
56 votes